Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hanh vai » hanh vi, hanh va, hanh tai
cuu tre » cua tre, cau tren
va hanh » van hanh, va thanh, va danh
te sach » toc sach
hieu ve » hieu va, hieu van
tu nang » tru nang, tu nong, tu nano
tuc va » thuc va, truc va, tuc xa
co tuc » co thuc, co tu, co toc
ve co » vo co, va co, de co

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((tu nang) or (truc nano)) xa hoi. hieu ve co tuc va hanh vai ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nang) OR (truc nano)) xa hoi. hieu ve co tuc va hanh vai ((cuu tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tu nang) or (truc nano)) xa hoi. hieu ve co tuc va hanh vai ((cuu tre) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nang) or (truc nano)) xa hoi. hieu ve co tuc va hanh vai ((cuu tre) OR (cau treo))*.